Uncovered Clues

A dig spell that only refills on other spells, never lands or creatures, which fixes a hard ceiling on how broadly useful it can be: this is selection built specifically for a deck whose threats and answers are themselves cardboard you cast. The four-deep look paired with a two-card cap puts it closer to filtered draw than raw card advantage, since it sifts past anything that is not an instant or sorcery. Where those rejected cards go is the detail worth noticing: they are buried on the bottom of the library rather than dumped into the graveyard. In a shell stocked with flashback, retrace, or jump-start, that distinction cuts two ways. The cards it grabs leave your spell density intact in hand; the cards it skips are tucked out of short-term reach at the bottom, beyond the recursion engines that would otherwise re-buy them from the yard. The narrowness is the design's whole reason for being. A spell that could fetch two of anything for would slot into every blue deck ever built; restricting it to instants and sorceries confines it to a specific spell-dense shell where digging two pieces deep is the point. The card does nothing until a critical mass of instants and sorceries exists to feed it, and once that mass exists, it smooths the draws of a deck that would otherwise flood on the wrong half of its library.